Temperature control method and structure for a battery pack

A temperature control structure for a battery pack wherein a plurality of battery modules comprising a plurality of serially connected cells are arranged in parallel and stacked in piles within a holder case, comprising:

• means for providing a forced current of air into the holder case in a direction in which the battery modules are stacked;
• and
• a plurality of film tubes respectively fitted on a plurality of battery modules located on an upstream side of the air current such as to form a gap between the battery module and the film tube, wherein said gap is adjustable in size and made larger in battery modules which are located at a position farthest upstream along the direction of the air current.

A temperature control structure for a battery pack wherein a plurality of battery modules comprising a plurality of serially connected cells are arranged in parallel and stacked in piles within a holder case, comprising:

• a device that provides a forced current of air into the holder case in a direction in which the battery modules are stacked;
• and
• a plurality of film tubes respectively fitted on a plurality of battery modules located on an upstream side of the air current such as to form a gap between the battery module and the film tube, wherein said gap is adjustable in size and made larger in battery modules which are located at a position farthest upstream along the direction of the air current.